---
title: "Expresso up to version 1.2 already"
url: "https://osherove.com/blog/2003/9/25/expresso-up-to-version-12-already.md"
canonical: "https://osherove.com/blog/2003/9/25/expresso-up-to-version-12-already.html"
published: "2003-09-25T11:07:00"
updated: "2003-09-25T11:07:00"
tags: ["Cool Tools"]
author: "Roy Osherove"
description: "Looks like Expresso , my tool of choice for working with regular expressions, is already on version 1.2 and I missed it! Hurry up and download it . From what I can see they added : Saving your own library of regular…"
usage: "Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page)."
license: "https://creativecommons.org/licenses/by/4.0/"
---

# Expresso up to version 1.2 already

By Roy Osherove September 25, 2003 In [Cool Tools](https://osherove.com/blog/category/cool-tools)

**Historical article** · Originally published September 25, 2003; technical details may be outdated.

Looks like [Expresso](http://www12.brinkster.com/ultrapico/Expresso.htm), my tool of choice for working with regular expressions, is already on [version 1.2](http://www12.brinkster.com/ultrapico/Expresso.htm) and I missed it! Hurry up and [download it](http://www12.brinkster.com/ultrapico/ExpressoDownload.htm).

From what I can see they added :

- Saving your own library of regular expressions divided into categories (add as much as you want)
- Tools - > Show C#/Vb.Net code displays the code segment required to run this regex using C# or VB.Net
- “Compile to assembly” option giving you the ability to compile this regex into a .net assembly (you decide the name of the class to hold the functionality inside the assembly
- “Save code to a file“ lets you do just that.

Excellent!

The thing I love most about this tool is that it has a “regex builder” inside it, from which I've learned 90% of what I know in this language. How cool is that? It's the simplest things that seem to carry the most impact.

## More in Cool Tools

[All posts in Cool Tools](https://osherove.com/blog/category/cool-tools)

- Sep 28, 2003

    ### [\[New article\]: Creating a generic Site-To-RSS tool (site scraping)](https://osherove.com/blog/2003/9/28/new-article-creating-a-generic-site-to-rss-tool-site-scrapin.html)

- Sep 27, 2003

    ### [nsh - A tool to run .NET source files like script files.](https://osherove.com/blog/2003/9/27/nsh-a-tool-to-run-net-source-files-like-script-files.html)

- Sep 22, 2003

    ### [NAnt-addin: another coolness in the making?](https://osherove.com/blog/2003/9/22/nant-addin-another-coolness-in-the-making.html)

- Sep 18, 2003

    ### [XmlUnit](https://osherove.com/blog/2003/9/18/xmlunit.html)


---

## About the author

**Roy Osherove**: Senior Solutions Architect at AWS working on AI for production and AI-driven development; author of The Art of Unit Testing and Elastic Leadership, with about 20 years of consulting and training on unit testing, TDD, team leadership and continuous delivery.

### Sites

- [RobotPaper](https://robotpaper.ai/): This blog: AI patterns and anti-patterns, AI and coding agents, and engineering leadership.
- [osherove.com](https://osherove.com): Roy's personal site. Author of The Art of Unit Testing and Elastic Leadership; consulting and training on unit testing, TDD, team leadership and continuous delivery, plus about 20 years of blog posts.
- [The Art of Unit Testing](https://www.artofunittesting.com): The Art of Unit Testing, 3rd Edition (Manning): readable, maintainable, trustworthy unit tests, plus TDD workshops in C#, JavaScript, Java and Kotlin.
- [5whys.com](https://www.5whys.com): Roy's writing on software team leadership: self-organizing teams, surviving chaos, learning mode and the Elastic Leadership model.
- [Pipeline Driven](https://pipelinedriven.org): Continuous delivery and DevOps practices: build patterns, pipeline-friendly testing, DevOps metrics and enterprise DevOps.
- [Elastic Leadership](https://www.elasticleadership.com): Elastic Leadership, Roy's framework for software team leaders (survival, learning and self-organizing modes).

### Social

- X: https://x.com/royosherove
- LinkedIn: https://www.linkedin.com/in/osherove/

### Contact

- Contact form: https://forms.gle/jQSx5KoXvrVA1JCK7

### License

Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page). License: https://creativecommons.org/licenses/by/4.0/